Do not worry! It is not a heart disease. You can read lot if you go back on the pages, people do far too big deal about it, so lots of talk about PVC s. from PVC sufferers.
Also there planty of talk and support:
http://www.medhelp.org/forums/Heart-Rhythm/show/92
And good info from wikipedia!:
http://en.wikipedia.org/wiki/Premature_ventricular_contraction